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Alcatel Alenia To Build Radar Altimeter For CryoSat-2
 
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Alcatel Alenia To Build Radar Altimeter For CryoSat-2  
 
The SIRAL-2 radar altimeter will be used to determine the thickness of ice sheets on both land and at sea.   
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Tuesday, October 03, 2006:  Alcatel Alenia Space has signed a contract with EADS SPACE, the satellite prime contractor, to manufacture the SIRAL-2 radar altimeter to be used on the ice sheet monitoring satellite CryoSat-2. As main instrument of the CryoSat mission, SIRAL-2 will be used to determine the thickness of ice sheets on both land and at sea.





Derived from the Poseidon ocean altimeter on the Jason satellite, SIRAL-2 is a high performance and compact (70 kg) instrument that combines three measurement modes: low resolution, synthetic aperture radar (SAR) and interferometric radar mode.

SIRAL-2 has high resolution (250 meters) and interferometry(measurement of slopes) capabilities. It is expected to facilitate greater understanding of fluctuations in the level and thickness of the polar icecaps and the great ice sheets. This type of data would be critical in the development of models used to analyse and predict global warming trends.

This contract follows a decision by the European Space Agency (ESA) to replace the CryoSat-1 mission, which was the first earth exploration mission within the scope of the Living Planet programme launched by ESA. In that scope, Alcatel Alenia Space had already designed and built the SIRAL-1 radar instrument on-board the CryoSat-1 satellite.



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